It's tough to balance with soloers and parties going after the same mob sets. If the sp 10 level cap is raised, it raises the sp per hour of party grinds dramatically, again jacking the balance of solo play.

Who plays solo? Jp players. Enough said, devs will never not go to lengths to accommodate that playstyle.

NA and Europe drive demand for party play, and even though we make up 75% of the base...yeah. Japan.